BIOLOGY 1050 ECU FINAL EXAM
EXPECTED QUESTIONS WITH VERIFIED ANSWERS
Question 1.
What is biodiversity
ANSWER
The variety of life on earth
Question 2.
What 3 factors influence how much biodiversity is present in a given area
ANSWER
Solar energy, rate of disturbances, evolutionary history
Question 3.
What areas have greater solar energy
ANSWER
Equatorial regions
Question 4.
Is there more or less biodiversity in areas with greater solar gy
ANSWER
More ener-
Question 5.
What are biodiversity hotspots and why they important
ANSWER
Areas that have a lot of biodiversity, e.g. tropical rainforests, hotspots are have more than
20% of the worlds species
Question 6.
2 Types of Extinction
ANSWER
Mass extinction and Background extinction
, Question 7.
How does a species' geographic range ence its risk of extinction
ANSWER
smaller range = increased risk influ-
Question 8.
What are the main es of the biodiversity sis
ANSWER
caus- Habitat loss, introduced species, over exploitation, effects of pollution cri-
Question 9.
What is the effect habitat fragmentation
ANSWER
of Smaller geographic range/smaller populations/less gene flow
Question 10.
Describe how the acid rain compares the pH of other substances
ANSWER
pH of Pure water has a pH of 7, on average acid rain in the US ranges from pH to of 4.5 - 5.5,
which more than 100 to 1,000 times more acidic than water
Question 11.
What is the role of ozone layer
ANSWER
the O3 In the upper atmosphere that blocks UV radiation from the sun
Question 12.
mass extinctions
ANSWER
a large number of species become extinct over s short period of time due to extraordinary
and sudden environmental change
EXPECTED QUESTIONS WITH VERIFIED ANSWERS
Question 1.
What is biodiversity
ANSWER
The variety of life on earth
Question 2.
What 3 factors influence how much biodiversity is present in a given area
ANSWER
Solar energy, rate of disturbances, evolutionary history
Question 3.
What areas have greater solar energy
ANSWER
Equatorial regions
Question 4.
Is there more or less biodiversity in areas with greater solar gy
ANSWER
More ener-
Question 5.
What are biodiversity hotspots and why they important
ANSWER
Areas that have a lot of biodiversity, e.g. tropical rainforests, hotspots are have more than
20% of the worlds species
Question 6.
2 Types of Extinction
ANSWER
Mass extinction and Background extinction
, Question 7.
How does a species' geographic range ence its risk of extinction
ANSWER
smaller range = increased risk influ-
Question 8.
What are the main es of the biodiversity sis
ANSWER
caus- Habitat loss, introduced species, over exploitation, effects of pollution cri-
Question 9.
What is the effect habitat fragmentation
ANSWER
of Smaller geographic range/smaller populations/less gene flow
Question 10.
Describe how the acid rain compares the pH of other substances
ANSWER
pH of Pure water has a pH of 7, on average acid rain in the US ranges from pH to of 4.5 - 5.5,
which more than 100 to 1,000 times more acidic than water
Question 11.
What is the role of ozone layer
ANSWER
the O3 In the upper atmosphere that blocks UV radiation from the sun
Question 12.
mass extinctions
ANSWER
a large number of species become extinct over s short period of time due to extraordinary
and sudden environmental change
